Improvement in weft-stop mechanisms for looms



2 Sheets--Sheetvk w. TAYLUB. weft-Stop Mechanisms for Looms. NOJIJZQ, YPatentedlune 9,1874.

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AMERICAN STOP-MOTION COMPANY, OF SAME PLACE.

IMPROVEMENT IN WEFT-STOP MECHANISMS FGR LOOMS.

Specification forming part of Letters Patent No. 151,729, dated June 9,1874; application filed April 15, 1874.

To all whom it may concern:

Be it known that I, WILLIAM TAYLOR, of Boston, in the county of Suffolkand State of Massachusetts, have invented certain new and usefulImprovements in Weft-Stop Mechanism for Looms, of which the following isa specication:

My invention relates to looms, in which a positive stopping device isactuated by the shuttle-binders; and also by the weft-detecters placedat both ends of the lay.

It consists in devices, by means of which one protector-rod providedwith two daggers of dierent length, or with a two-pointed dagger, servesto connect the knockoff lever with the shuttlebinder and with theweft-detecter, in such manner that the loom is stopped at the requiredtime, both when the shuttle fails to box and when the weft-thread isabsent.

Figure l shows the lay of a loom in elevation. Fig.2 shows a plan of thesame, also a part of the stopping and belt-shipping device. Fig. 3 is aperspective view, showing one end of the lay and my attachment. Figs. 4and 5 are partsections, showing the action of the jointed fingers of theprotector-rod and the protector-rod daggers. Fig. 6 is a perspectiveview of a part of the lay and shuttle-boxes and binders, and shows oneof the protector-fingers C as it appears when drawn off from theshuttlebinder B. by the action of the weft-de- Y tecter in the absenceof a thread.

In the drawing, A represents the lay of a loom, having drop-boxes. B isone of the shuttle-binders, made in the usual manner, C and c are thefingers of the protector-rod D, which are made like the ordinaryAfingers, eX- and act in the same manner in connection with theshuttlebinder B, protector-rod D, and dagger H. By

4means of the jointed ngers C c and a supplemental dagger theprotector-rod is made to perform a double function, 'viz., to stop theloom when the shuttle falls, and also when the weft-thread is absent.The daggers may be joined in one piece, as shown at G, Figs. 3, 4, and5, or they may be made separate, and each connected to the protector-rodby a nut, screw or pin.

So long as the ends of the lingers C c rest 011 the shuttle-binders B,Figs. 1, 3, and 4, and the shuttle is in place, the dagger H will remainas shown in Fig. 4--that'is, so as to pass under Vthe knock-off deviceW, and not stop the loom. If the shuttle be out of place, then thebinders B will fall back and allowthe dagger H to strike the knock-offdevice, and thus perform its ordinary function of stopping the iom whena shuttle has failed to reach its In order to allow the supplementaldagger G to stop the loom when a weft-thread breaks, I connect thelingers C c with the let-oli' device, as shown in Fig. 3. Thisconnection I will now describe.

K and L, Figs. 1, 2, and 3, represent rods, which serve to connect theswinging parts of the lingers C c with a cross-lever or disk, M, so thatif the cross-lever or disk M is moved it will, acting through the rods Kand L, cause a corresponding motion of the ngers C and c-that is, if thedisk M is moved in the direction indicated by the arrows, Fig. 3, itwill draw the upper ends of the fingers off from the ends of theshuttle-binder, as shown in Fig. 6,and thus allow them (the lingers) tofallback, which will allow the protector-rod to revolve and throw up thedagger H, so that the supplemental part G will strike the knockoff leverW. (See Fig. 5.) This action, caused by the detecters falling throughthe grills V in the absence of the weft-threads, as will be explained,can only take place when the lay is so near the breast-beam that thepoint H of the dagger has passed under the knock-off W, and thus cannotact upon it. This may be understood if We remember that the detecters donot fall until after the shuttle has passed-that is, until the forwardm0- tion of the lay is nearly completed. When the daggers are actuatedby the yielding of the lingers C c from the absence of the shuttle thisaction takes place during the first part of the forward stroke of thelay, and the longer part H of the dagger has time to rise into positionto strike the knock-off The protector-rod D is held by a spring, X, Fig.1, so as to press the fingers C and c against the shuttle-binders B.

The let-off device is made as follows: The

disk M, Figs. l and 3, is attached to a shaft, N, Figs. 2 and 3,'whichpasses through the lay, and has an arm, O, attached to it. This arm O isheld by a pivoted latch, P, which is provided with an arm, R, soarranged in connection with the finger S on the detecter-rod T that whenthe finger S is lowered by the fall of the detecter through the grill V,(in case of the absence of the weftjthreadg the arm R will be throwndown and the latch l? disconnected from the arm O. This action willcause the spring Y to throw the shaft N and disk M around in thedirection of the arrow, and thus pull the ngers C and o off from theshuttle-binders, which action, as already stated, will allow the daggerH to be thrown up,so that the supplemental part Gr will come in contactwith the knock-off device W and stop the loom. This stopping of the laytakes place at the time when the lay is nearly at the end of its forwardstroke-that is, when the cranks of the shaft are nearly on center, and,consequently, at a time when the lay is moving comparatively slow. Thusthe shock of abruptly stopping the lay is relatively slight.

I claim as my invention- 1. The jointed fingers G cupon the protectorrodD, connected with, and operating in accord with a weftdetectermechanism, substantially as described, and for the purpose set forth.

2. The combination of the weft-stop let-off device, the linger S, thearm R, the latch P, the arm O, and shaft N, with the disk M and rods LK, operating to move the iingers C c, substantially as described, andfor the purpose set forth.

3. In combination, with the weft-detecters and shuttle-binders, thetwo-pointed dagger upon the protector-rod, as and for the purpose setforth.

WILLIAM TAYLOR.

Witnesses WILLIAM EnsoN, SAML. HAPEN.

